* refactor(desktop): route tool cards through a table keyed on the card-tool names
The name-keyed if ladder in ChainToolFallback becomes TOOL_CARDS, typed
Record<CardToolName, FC>. CardToolName comes from the same list isCardTool
reads, so a card added to one list and not the other fails the build.
Behaviour is unchanged.
* refactor(desktop): dispatch desktop bridge events through a handler table
The six-branch event.type ladder becomes DESKTOP_BRIDGE_HANDLERS, one row
per event with its body and comments unchanged. Behaviour is unchanged.
* chore: retrigger CI (zero-job dispatch failure, auto-heal)
fc042f1d67